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Allow different hash table size for dim/var/attr #132

Merged
merged 4 commits into from
Mar 18, 2024
Merged

Allow different hash table size for dim/var/attr #132

merged 4 commits into from
Mar 18, 2024

Commits on Mar 17, 2024

  1. New hints: nc_hash_size_dim, nc_hash_size_var, nc_hash_size_gattr, nc… 

    …_hash_size_vattr

Add 4 new PnetCDF hints.
nc_hash_size_dim:   Set hash table size for dimension names
nc_hash_size_var:   Set hash table size for variable names
nc_hash_size_gattr: Set hash table size for global attribute names
nc_hash_size_vattr: Set hash table size for variable attribute names
    @wkliao
    wkliao committed Mar 17, 2024
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  2. Enable different hash table sizes for var, dim, attr 

    * Add constant PNC_HSIZE_DIM, the default hash table size for
  dimensions.
* Add constant PNC_HSIZE_VAR, the default hash table size for
  variables.
* Add constant PNC_HSIZE_VATTR, the default hash table size for
  attributes per variable.
* Add constant PNC_HSIZE_GATTR, the default hash table size for
  global attributes.
* Add PNC_VATTR_ARRAY_GROWBY, which is used to grow the array of
  attributes per variable. The number of attributes per variable is
  expected to be much smaller than the global attributes.
* Rename some NC_ constant in ncmpio_NC.h to PNC_
    @wkliao
    wkliao committed Mar 17, 2024
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  3. Add 3 new test programs to test hashing performance

    @wkliao
    wkliao committed Mar 17, 2024
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  4. add note of new hash table size setting options

    @wkliao
    wkliao committed Mar 17, 2024
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